A cobpobation of mfsne



n z A. GREEN 16 17 Maylo l927'ADJUS1'INGWALVE"AND METHOD oF MAKING THB snme 6 lFiled Nov.

a W m l IN vE/v T01?. new GREEN,

#Z /rra//vfx Reissues ,May 1o, 1.921.

. UNITED [STATES PATENT OFFICE,

ANDREW GREEN, oF ALBERT LEA, MINNESOTA, AssIGNoB. To 'AMERIGAN oas MA- cmNE COMPANY, INC., E ALBERT LEA, M1NNEsoTA,-A conroEATroN or vImm:-

soTA. v

--ADJUSTING vALv'E AND METHOD or MAKING THE saints;-

Original Ile. 1,613,323-,-dated January'4, 1927, Serial No. 672,857, led November 5, 1923. Applctian-for reissue illedlarch 25, 1927.. Serial No. 178,492.

This invention relates to a valve and con# 1 is aA view in sidel elevationt a.

duit for conducting-fluid, an-d whilev the invention is capable of many applications, it is particularly designed and illustrated for use in connection with a gas or liquid fuel burning stove. In such stoves it has been .the practlce to use a long conduit or tube for conducting the fluid, either liquid or gaseous, at the end of which tubewas formed a valve. This valve necessitated having a bore of muchsmaller diameter in the conduit than the diameterv of the greater portion of the lengthi thereof. It is impractical,

ble and impossible `as an economica-lcommercial proposition to use one piece and to bore the` same for a larger diameter for the enfk tire lengthof the tube.

ameter was lobtained at one time by driving a brass plug into the end vof the tube. This structure, however, proved objectionable as the heating of the conduit invariably caused leaks about the plug. It was'later proposed to use a steel plug and tol b raze the same to the tube. rl`he use of the steelv plug has-also proven objectionable whether driven Vinto thertube or brazed thereto as in the use ofi the device and in the heating and cooling It is more specially an object of the in.

, .parts throughout the` dilereiit views, Aan f thereof leaks would occur about the plug. The present invention was then -made to overcome the diiculty encountered in the use of different kinds of plugs inserted into the tube or conduit.

It is an object of this invention, therefore, to provide such a conduit and'valve in which the plug is formed of a separate piece of material and. after being'finished, isbuttwelded onto thel tube. y

vention, therefore, to provide such a method in which a separate iron or steel plug` is formed boredV with a comparatively vsmall diameter anda slightly larger diameter to form avalve seat and after being finished is butt-welded onto the end of the conduit which-has much thinner walls.

` These and other. objects and advantages of the invention will be -fully-set^forth in the following' description lmade in,connection.k with the'accomplanying drawin-filn whichV aractersrefefgftothe like reference c The reduced di#` portion of the above valve structure inwhich the inventlon 1s used, the device being brokernb' the salue are welded together.

Referring to the drawings, a valve structure used in connection with the stove is .illustrated comprising a long tube or conduit Iliaving one end connected to ahollow coupling bracket 2 having a supporting lug 3 and a threaded nozzle 4 dependingvtherefrom, then 'luid or gaseous medium being supplied -through the nozzle 4' into the bracket 2 .and tube 1. The bracket 2 has a packing nut 5 thereon and a stem 6 projecting through the parts 1, 2 and 5 and is lequipped lwith an'operating hand' wheel 7 at onev end thereof. The tube 1 has, at its other end a p ortion I of smaller diameter which comprises a bore ofcomparatively -small diameter '8 and-a bore of larger diameter 9, the valve seat 10 being formed at the junction of said bores. The outer end of portion 1a vis tapped to receive a nozzle .plug 11 and the' inner end thereof is also tapped or threaded to lreceiveV the threaded portionA 6a adjacent the -end of stem 6. A

longitudinal' groove 6b -isl formed throughout' the threaded portion 6 so thatthe fluid can passvthrou h said portion. The stem 6 is also forme 'at the outer end of the threaded portion 6"v with portionsA of' different diameters forming a valve 6, and a pin .6

.finished plug and end of the conduit before-1v f is formed on the outer end of the-stem 6,

which pinprojeets through the opening vin the nozzle plug 11, as shown in Fig. 2. .The operation of the structure' will be apparent. 'The fluid passes through thetube 1 through the longitudinal groove 6", through the boresVS and 9'whei1 the valve 6 is opened and -then out T through the nozzle 11. 1t .is lthus seen that it; is' necessary tto have the portion 14 of a mach less interior diameter than the portion-1.

ioo

structure.

. conduit having a bore -throughout the length In order successfully to construct the device and also economically to construct the trically Welded. The tube l and the plug laa are brought together With their axes in aline-- ment and the saine are then heated by the .Welding current and the tivo parts thus sei curely and permanently joined as one integral piece. When the parts are so Welded, the device already described comprising the parts 1 and la is formed. Both the plug and thetube are of iron or steel so that an integral and homogeneous structureis formed. This structure successfully endures the heating and cooling to which the saine is subjected Without any leaks or cracks being formed therein.

From the above description it is seen that applicant has invented a. simple and efficient method of Aformingsuch a conduit and valve The invention has been amply demonstrated in actual practice and found to be very successful and efficient. The same overcomes a difficult which has been-encountered through a 'ong period.

lIt will, of course, be understood, that various changes maybe made in the steps of the process and the sequence thereof Without vdeparting from the scope of a'pplicants invention, which, generally stated, consists in a device and method capable of carrying out the objects above stated, such as shown and described and defined in the appended claims:

What is claimed is:

1. 'A combined vaporizing tube and valve for a liquid hydrocarbon stove, comprising a` Vcomparatively long piece of tubing, a solid cylindrical plug of much shorter length, having a bore therein, which bore forms a valve seat therein, said plug having a small.

bore extending from said valve seat, said first mentioned Abore being` of considerably smaller diameter than the internal diameter of said tube, said tube being butt-Welded to the end of said plug having said first men-v tioned bore therein, thus forming an integral '1 thereof, and a valve stem adapted to extend valve seat, said first mentioned bore being of'coiisiderably smaller diameter than the internal diameterl of said tube and then butt-welding one end of said tube and the end of saidfplug having the iirst mentioned bore therein together so as to leave the bores therein unobstructed, thus forming an integral conduit having a bore throughout the length thereof, and providing a valve stern adapted to extend through said conduit and having a valve thereon co-operating with said valve seat. i

3. A combined vaporizing tube and valve for a ,liquid hydrocarbon stove, comprising a comparatively long piece of tubing, a solid cylindrical plug of much shorter length, having a bore therein, which bore forms a valve 'seat therein, said plug having a small' bore extending from said valve seat, said first mentioned bore being of smalle/n diameter than the internal .diameter of 'said tube,

hsaid tube being welded tothe endv of said 'plug having said first mentioned bor'e therein, thus forming an integralconduit having valve stemadapted to extend 'through said a bore throughout thelength thereof, and a tube and-liaving a valve thereonco-operating with said valve seat.

4. The method of n iaking-a'ucombined va'- porizing tube and valve for aV liquid hydro-v 'carbon stove which consistsfr providing a comparatively long piece of tubing, forming a solid cylindrical plug of mucli shorter length, forming a bore in said plug and forming a-valve seat therein and forming a small bore-extending from said valve seat,I said `first mentioned bore being of smaller diameter than the internal diameter of said In testimony whereof l affix my sigiirfituiitflA ANDREW' GREEN .a

'ing a valve stem adapted to extend through, 4 said conduit and having a valve thereon mailM5` operating with said valve seat. t" 

